## ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 7 Ratio and Proportion MCQS

These Solutions are part of ML Aggarwal Class 10 Solutions for ICSE Maths. Here we have given ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 7 Ratio and Proportion MCQS

**More Exercises**

**Choose the correct answer from the given options (1 to 10):**

**Question 1.****The ratio of 45 minutes to (5 frac { 3 }{ 4 }) hours is****(a) 180:23****(b) 3:23****(c) 23:3****(d) 6:23****Solution:**

ratio of 45 minutes to (5 frac { 3 }{ 4 }) hours is

45 minutes to : (5 frac { 3 }{ 4 }) hours

**Question 2.****The ratio of 4 litres to 900 mL is****(a) 4 : 9****(b) 40 : 9****(c) 9 : 40****(d) 20 : 9****Solution:**

4l : 900 ml

= 4000 ml : 900 ml

= 4000 : 900

= 40 : 9 (b)

**Question 3.****When the number 210 is increased in the ratio 5 : 7, the the new number is****(a) 150****(b) 180****(c) 294****(d) 420****Solution:**

210 is increased in the ratio 5 : 7, then

New increased number will be

= 210 × (\ frac { 7 }{ 5 })

= 294 (c)

**Question 4.****Two numbers are in the ratio 7 : 9. If the sum of the numbers is 288, then the smaller number is****(a) 126****(b) 162****(c) 112****(d) 144****Solution:**

Ratio in two number = 7 : 9

Sum of numbers = 288

Sum of ratios = 7 + 9

= 16

Smaller number = (\ frac { 288times 7 }{ 16 })

= 126 (a)

**Question 5.****A ratio equivalent to the ratio (\ frac { 2 }{ 3 }) : (\ frac { 5 }{ 7 }) is****(a) 4:6****(b) 5:7****(c) 15:14****(d) 14:15****Solution:**

(\ frac { 2 }{ 3 }) : (\ frac { 5 }{ 7 })

Multiply and divide (\ frac { 2 }{ 3 }) by 7 and

Multiply and divide (\ frac { 5 }{ 7 }) by 3

**Question 6.****The ratio of number of edges of a cube to the number of its faces is****(a) 2 : 1****(b) 1 : 2****(c) 3 : 8****(d) 8 : 3****Solution:**

No. of edges of the cube = 12

No. of faces = 6

Ratio in edges a cube to the number of faces = 12 : 6

= 2 : 1 (a)

**Question 7.****If x, 12, 8 and 32 are in proportion, then the value of x is****(a) 6****(b) 4****(c) 3****(d) 2****Solution:**

x, 12, 8, 32 are in proportion, then

x × 32 = 12 × 8 (∵ ad = bc)

⇒ x = (\ frac { 12times 8 }{ 32 }) = 3

x = 3 (c)

**Question 8.****The fourth proportional to 3, 4, 5 is****(a) 6****(b) (\ frac { 20 }{ 3 })****(c) (\ frac { 15 }{ 4 })****(d) (\ frac { 12 }{ 5 })****Solution:**

The fourth proportion to 3, 4, 5 will be

= (\ frac { 4times 5 }{ 3 })

= (\ frac { 20 }{ 3 }) (b)

**Question 9.****The third proportional to (6 frac { 1 }{ 4 }) and 5 is****(a) 4****(b) (8 frac { 1 }{ 2 })****(c) 3****(d) none of these****Solution:**

The third proportional to (6 frac { 1 }{ 4 }) and 5 is

⇒ (6 frac { 1 }{ 4 }) : 5 :: 5 : x

⇒ (\ frac { 25 }{ 4 }) : 5 :: 5 : x

⇒ x = (\ frac { 5times 5 }{ 25 }) × 4

⇒ 4 (a)

**Question 10.****The mean proportional between (\ frac { 1 }{ 2 }) and 128 is****(a) 64****(b) 32****(c) 16****(d) 8****Solution:**

The mean proportional between (\ frac { 1 }{ 2 }) and 128 is

= (sqrt { frac { 1 }{ 2 } times 128 })

= √64

= 8 (d)

Hope given ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 7 Ratio and Proportion MCQS are helpful to complete your math homework.

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